KeyStep

Senior Software Engineer - Machine Learning (f/m/d)

Contentful
London, UK
3 days ago
full-time

Skills & Technologies

Software DevelopmentDistributed SystemsScalabilitySOLIDAWSAzureGCPCloudContentfulMachine LearningNLPLLMGenerative AIPrompt EngineeringFine-tuningAIResearch

Job Description

About the Opportunity

Become part of the AI revolution at Contentful where we build real world AI solutions for thousands of active customers. At Contentful you will help imagine, drive, and build ML solutions which produce immediate customer impact by helping them get more done than they ever imagined. We are looking for an excellent Senior Software Engineer - Machine Learning (f/m/d) who understands and has experience in this field and current Generative AI trends. If you're passionate about pushing the boundaries of what's achievable with ML products on a large scale content management system, we want you on our team.

What to expect?

Measure and ensure the high-quality output of ML workloads for our enterprise customers.

Design, build, and measure production software in the Contentful Platform.

Conduct focused research and testing using tools like Jupyter Notebook.

Optimize generative AI products for accuracy, speed, and scalability.

Integrate ML cloud solutions and adapt them to our large-scale use cases.

Integrate prompt engineering and fine-tuning for customer use cases.

Develop software that scales to meet the demands of high-load customer workloads.

Lead design reviews with peers and stakeholders to decide amongst available technologies.

Drive the ML education in the team and establish a high standard of quality & ownership

What you need to be successful?

Proven experience as a technical leader in a product software development environment

Proven Track Record in Model Development, including successfully developing and deploying LLM-based models for various NLP tasks in real-world applications with production workloads

Proven ability to work backwards from customer needs to deliver ML-based features that meet those needs

Ability to organize and prioritize competing workloads

Familiarity with distributed systems and cloud services (e.g., AWS, Azure, GCP)

Solid understanding of machine learning principles

Experience with container frameworks

Company & Role Analysis

JobSeeker+
Likely perks
Private MedicalPension25+ Days HolidayStock OptionsLearning BudgetFlexible Hours
Culture & working style

Neutral 2–4 sentence summary of what working at this company is like, drawn from public reviews and press coverage. Tone, collaboration style, pace, benefits highlights.

Market salary range

£45,000 – £60,000 (Glassdoor, Levels.fyi, 2025)

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